Question

What is the area of a circle with diameter 21cm

Answer 1

1386 cm² is the area of the circle

Answer 2

Answer:

346.5 cm2

Step-by-step explanation:

Given that,

Diametre =21 cm

Than,radius =21/2

Now,

The area of circle is pie×r^2

So,

Thr area of given circle =22/7×(21/2)^2cm2

=(22/7×441/4)cm2

=346.5cm2